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Type of Boundary

3 Types of Plate Boundaries. Type of Boundary. Depends on type of crust. Trench, volcanic arcs, mtn ranges. Plate with denser oceanic lithosphere sinks ( subducted ) into the asthenosphere This crust is re-melted and recycled Trench formed where crust is destroyed.

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Type of Boundary

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  1. 3 Types of Plate Boundaries Type of Boundary Depends on type of crust Trench, volcanic arcs, mtn ranges

  2. Plate with denser oceanic lithosphere sinks (subducted) into the asthenosphere • This crust is re-melted and recycled • Trench formed where crust is destroyed

  3. Continental-Continental Convergence • Colliding plates buckle and thicken • Continental crust pushed upward • Plateaus and mountain ranges form

  4. Oceanic-Oceanic Convergence • One oceanic plate sinks (is subducted) under the • other • Trench is formed where crust is destroyed • Crust is melted and recycled • Volcanic island arcs also formed

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